Carbide Drill Bits for Concrete and Masonry > > Drill Bit

Simpson Strong-Tie MDMX11221Q 1-1/8 in. x 21 in. SDS-max® Shank Quad-Head Drill Bit (Pack of 10)

MDMX11221Q

• Features

  • Uniformly brazed carbide inserts resulting in longer bit life
  • Self-centering tips for accurate hole placement
  • Chromium-nickel-molybdenum steel alloy body ensures hammering quality and extended service life
  • Heat-treatment procedures and shot-peened finish increase surface hardness, drilling speed, reduces drill bit wear and improves resistance to bending forces
  • Drill bit conforms to ANSI Standard B212.15
  • High-volume, multi-flute spiral quickly channels concrete dust from the hole to improve drilling speed
  • 4 x 90° head geometry crushes through rebar and prevents sticking in reinforced concrete
  • Quad head
  • Diameter: 1-1/8 in.
  • Drilling depth: 17 in.